Bucket wheel machine coal taking automatic screening device

Abstract

The invention relates to the technical field of coal conveying and processing, and discloses a bucket wheel machine coal taking automatic screening device which comprises a main body component and a screening component, the main body component comprises a bucket wheel machine, one side of the bucket wheel machine is provided with a belt, the belt is driven by a plurality of gears, and one side of one gear is fixedly connected with a motor; the screening component comprises a fixing support assembly located on one side of the bucket wheel machine, the fixing support assembly is rotationally connected with an adjusting support assembly, the adjusting support assembly is fixed through a fixing assembly on one side of the fixing support assembly, the protective plate can be accurately clamped through adjustment of a threaded handle, and the stability of the screening device is ensured. The combined use of the air bag and the magnetic sheet can effectively fix the position of the rotating rod, meanwhile, the air bag can provide a buffering effect, abrasion caused by fixing of the rotating rod is reduced, the service life of equipment is prolonged, the position of the rotating rod can be easily changed through manual adjustment, rapid adjustment of the screening device is achieved, and the screening efficiency is improved. And the flexibility and convenience of operation are improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal transportation and processing, and in particular to an automatic screening device for coal taking from a bucket wheel machine. Background Art

[0002] After the bucket wheel takes the coal, it continuously enters the cantilever belt guide trough through the chute plate. Due to the continuous rotation of the bucket wheel, affected by the coal quality, large pieces of coal and stones in the raw coal will be continuously sent to the conveyor belt. Due to the drop between the bucket wheel and the cantilever belt and the drop between the middle bucket of the cantilever belt and the lower belt, the large pieces of coal and stones carried in the raw coal will damage the conveyor belt when they fall down. The conveyor belt cannot run, resulting in the loss of production equipment. In addition, the bucket wheel cantilever belt needs to be cleaned by a dedicated person, and the running equipment also increases a certain degree of danger. Summary of the invention

[0003] In view of the above-mentioned problems existing in the existing bucket wheel machine automatic screening device for taking coal, the present invention is proposed.

[0004] Therefore, the purpose of the present invention is to provide an automatic screening device for bucket wheel excavator coal, which aims to provide a screening device that improves safety during coal transportation, improves screening efficiency, reduces maintenance costs, has good operating flexibility, effectively reduces material losses, and is easy to install and disassemble.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A bucket wheel machine coal automatic screening device comprises a main body component, including a bucket wheel machine, a belt is installed on one side of the bucket wheel machine, and the belt is driven by a plurality of gears, and a motor is fixedly connected to one side of one of the gears;

[0006] A screening component is located on one side of the main component, and the screening component includes a fixed bracket assembly located on one side of the bucket wheel machine, and an adjusting bracket assembly is rotatably connected to the fixed bracket assembly, and the adjusting bracket assembly is fixed by a fixing assembly on one side of the fixed bracket assembly.

[0007] As a preferred solution of the bucket wheel machine automatic coal screening device of the present invention, a protective plate is installed on the bucket wheel machine close to the belt side, a storage box is placed on the belt side, and the storage box, the protective plate and the bucket wheel machine are in a straight line.

[0008] As a preferred solution of the bucket wheel excavator coal automatic screening device described in the present invention, the fixed bracket assembly includes a fixed bracket located in a groove on one side of the bucket wheel excavator, a plurality of fixed rods are installed on one side of the fixed bracket, and a stabilizing bracket is fixedly connected to one side of the fixed rod located on the edge of the fixed bracket.

[0009] As a preferred solution of the bucket wheel machine coal automatic screening device of the present invention, the stabilizing frame is rotatably connected with a transverse telescopic rod and a longitudinal telescopic rod, and a clamping claw is hinged on one side of the transverse telescopic rod.

[0010] As a preferred solution of the bucket wheel excavator coal automatic screening device described in the present invention, one side of the longitudinal telescopic rod is fixedly connected to an L-shaped clamping plate, one side of the L-shaped clamping plate is slidably connected to a movable plate, and one side of the movable plate is threadedly connected to a threaded handle.

[0011] As a preferred solution of the bucket wheel excavator coal automatic screening device of the present invention, wherein: the stabilizing frame is fixedly connected to one side of the fixing rod located at the non-edge of the fixing frame, and the stabilizing frame is rotatably connected to the longitudinal telescopic rod.

[0012] As a preferred solution of the bucket wheel excavator coal automatic screening device of the present invention, one side of the longitudinal telescopic rod is fixedly connected to the L-shaped clamping plate, one side of the L-shaped clamping plate is slidably connected to the movable plate, and one side of the movable plate is threadedly connected to the threaded handle.

[0013] As a preferred solution of the automatic screening device for coal taking from a bucket wheel excavator described in the present invention, the adjusting bracket assembly includes a rotating shell rotatably connected to the fixed rod, a rotating groove is provided on the side wall of the rotating shell, a rotating rod is rotatably connected in the rotating groove, a circular ring is fixedly connected to one side of the rotating rod, the circular ring rotates around the fixed rod, and a first magnetic sheet is fixedly connected to one side of the circular ring.

[0014] As a preferred solution of the bucket wheel excavator coal automatic screening device described in the present invention, the fixed component includes a plurality of air bags fixedly connected to the rotating shell, one side of the plurality of air bags is fixedly connected to an L-shaped expansion piece, and the L-shaped expansion piece is fixedly connected to a second magnetic piece on the side close to the circular ring.

[0015] As a preferred solution of the bucket wheel excavator coal automatic screening device of the present invention, several of the air bags are connected to the air cavity through corresponding air holes, one side of the air cavity is threaded, and the threaded section of the air cavity is engaged with the threaded pushing handle.

[0016] Beneficial effects of the present invention: Improved safety:

[0017] By installing a protective plate at the bucket wheel discharge port, the material is effectively prevented from scattering during the material dropping process, avoiding safety hazards to the surrounding environment and personnel. The setting of the storage box ensures that large pieces of coal and stones that fail to pass the screening can slide into it in an orderly manner instead of directly hitting the belt, reducing the risk of damage to the belt. The adjustability of the bracket assembly allows the opening size of the screening device to be flexibly adjusted according to materials of different sizes, thereby improving the accuracy and efficiency of screening.

[0018] The L-shaped clamping plate is used in conjunction with the moving plate. The protective plate can be accurately clamped by adjusting the threaded handle to ensure the stability of the screening device. The combination of the airbag and the magnetic sheet can effectively fix the position of the rotating rod. At the same time, the airbag can also provide a buffering effect, reducing the wear of the rotating rod caused by fixing and extending the service life of the equipment.

[0019] The airbag can be inflated and deflated easily by pushing the handle with a thread, which reduces the complexity and cost of maintenance. The position of the rotating rod can be easily changed by manual adjustment, which enables quick adjustment of the screening device and improves the flexibility and convenience of operation.

[0020] The levers that rotate to one side are connected by a connecting rod, which simplifies the adjustment process and makes it easier to adjust multiple levers. The material first hits the higher lever during the fall, which helps slow the material down and change its direction, thus avoiding direct impact on the belt and reducing material loss. After multiple decelerations and changes of direction, larger materials eventually slide into the storage box instead of falling directly on the belt, further reducing damage to the belt.

[0021] The telescopic characteristics of the horizontal and longitudinal telescopic rods and the design of the clamping jaws make the installation and removal of the screening device very simple and quick. The combination of the L-shaped clamping plate and the moving plate allows the fixed bracket assembly to be firmly installed on the protective plate, while also being easy to disassemble for maintenance or replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the structure of the screening component of the present invention.

[0025] Figure 3 It is a schematic diagram of the exploded structure of the screening component of the present invention.

[0026] Figure 4 It is a schematic diagram of the cross-sectional structure of the fixed bracket assembly and the adjustable bracket assembly in different planes of the present invention.

[0027] Figure 5 It is an enlarged schematic diagram of the structure at location A of the present invention.

[0028] In the figure:

[0029] 100, main body; 101, bucket wheel; 101a, protective plate; 101b, storage box; 102, belt; 103, gear; 104, motor; 200, screening component; 201, fixed bracket assembly; 201a, fixed frame; 201b, fixed rod; 201c, stabilizing frame; 201d, horizontal telescopic rod; 201e, clamping claw; 201f, longitudinal telescopic rod; 201g, L-shaped clamping plate; 201h, moving plate; 201i, threaded handle; 202, adjusting bracket assembly; 202a, rotating shell; 202b, rotating rod; 202c, ring; 202d, first magnetic sheet; 203, fixed assembly; 203a, air bag; 203b, L-shaped telescopic sheet; 203c, second magnetic sheet; 203d, air hole; 203e, threaded push handle. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0034] Example 1

[0035] Reference Figures 1-2, which is the first embodiment of the present invention, provides an automatic screening device for coal taking by a bucket wheel machine, the device includes a main body component 100, including a bucket wheel machine 101, a belt 102 is installed on one side of the bucket wheel machine 101, the belt 102 is driven by a plurality of gears 103, one side of one gear 103 is fixedly connected to a motor 104; a screening component 200, located on one side of the main body component 100, the screening component 200 includes a fixed bracket assembly 201 located on one side of the bucket wheel machine 101, an adjusting bracket assembly 202 is rotatably connected to the fixed bracket assembly 201, and the adjusting bracket assembly 202 is fixed by a fixing assembly 203 on one side of the fixed bracket assembly 201.

[0036] The main body 100 includes a bucket wheel 101 and its related conveying mechanism. The bucket wheel 101 is responsible for shoveling coal blocks from the coal pile and conveying the coal blocks to the discharge side through the through slot at its upper end. A belt 102 is installed on the discharge side of the bucket wheel 101 to receive the coal blocks sent by the bucket wheel 101 and transmit the coal blocks through a series of gears 103, one of which is connected to a motor 104, so as to realize continuous transportation of coal blocks.

[0037] The screening component 200 is located on one side of the main component 100, and its function is to screen out large pieces of coal and stones from the coal delivered by the bucket wheel 101. The core of the screening component 200 is a fixed support assembly 201, which supports the structural stability of the entire screening component 200. On this fixed support assembly 201, a rotatable adjustment support assembly 202 is installed. By adjusting the position of the support assembly 202, the path of the falling coal blocks can be changed, and then the size of the falling opening can be adjusted, and the speed of large pieces of coal and stones can be reduced, and their movement direction can be changed, so as to reduce the impact and damage to the belt 102.

[0038] A fixing assembly 203 is also provided on one side of the fixing bracket assembly 201, which is used to lock the position of the adjusting bracket assembly 202 to ensure the stability of the screening component 200 during operation. In this way, when the coal blocks fall from the discharge side of the bucket wheel machine 101 onto the belt 102, the screening component 200 can effectively screen out large pieces of coal and stones, thereby protecting the belt 102 from damage and ensuring continuous and stable transportation of coal.

[0039] In summary, the device scoops up the coal blocks through the continuous operation of the bucket wheel 101 and transports them to the discharge side through the through slots on the bucket wheel 101, and then transports them to the next processing link by the belt 102. At the same time, through the function of the screening component 200, large pieces of coal and stones can be effectively screened out, protecting the belt 102 from damage, and ensuring the efficiency and safety of the entire coal transportation process.

[0040] Specifically, a protective plate 101a is installed on the side of the bucket wheel machine 101 close to the belt 102, and a storage box 101b is placed on one side of the belt 102. The storage box 101b, the protective plate 101a and the bucket wheel machine 101 are in a straight line.

[0041] Among them, a protective plate 101a is installed on one side of the discharge port of the bucket wheel 101, and the function of the protective plate 101a is to prevent the material from scattering during the material dropping process. A storage box 101b is set next to the protective plate 101a, and the position of the storage box 101b is in the same line as the protective plate 101a and the bucket wheel 101. When large pieces of coal and stones cannot pass through the screening component 200, they will slide out of the fixed bracket assembly 201 and slide into the storage box 101b along the protective plate 101a. This design can ensure that large pieces of coal and stones will not fall directly onto the belt 102 and cause damage.

[0042] Furthermore, the fixed bracket assembly 201 includes a fixed frame 201a located in a groove on one side of the bucket wheel machine 101, a plurality of fixed rods 201b are installed on one side of the fixed frame 201a, a stabilizing frame 201c is fixedly connected to one side of the fixed rod 201b located on the edge of the fixed frame 201a, the stabilizing frame 201c is rotatably connected to a transverse telescopic rod 201d and a longitudinal telescopic rod 201f, and a clamping claw 201e is hinged on one side of the transverse telescopic rod 201d.

[0043] The fixed support assembly 201 includes a fixed frame 201a installed in a groove on one side of the bucket wheel 101. A plurality of fixed rods 201b are installed on one side of the fixed frame 201a, and these fixed rods 201b and the fixed frame 201a together form a stable basic structure. A stabilizing frame 201c is installed on one side of the fixed rod 201b at the edge of the fixed frame 201a, and the stabilizing frame 201c is installed with a transverse telescopic rod 201d and a longitudinal telescopic rod 201f by a rotational connection.

[0044] One side of the transverse telescopic rod 201d is hinged with a clamping claw 201e. The fixed frame 201a plays the role of supporting the fixed rod 201b, and the fixed rod 201b and the fixed frame 201a are both fixed parts. The function of the stabilizing frame 201c is to stably fix the fixed bracket assembly 201 on the protective plate 101a. The nodes of the transverse telescopic rod 201d installed on the stabilizing frame 201c are connected by screwing with each other, so that the length of the transverse telescopic rod 201d can be adjusted by relative rotation to achieve the telescopic function. When the transverse telescopic rod 201d is extended to the position of the protective plate 101a, the protective plate 101a can be clamped by rotating the clamping claw 201e, thereby ensuring that the fixed bracket assembly 201 is firmly installed on the protective plate 101a.

[0045] Furthermore, one side of the longitudinal telescopic rod 201f is fixedly connected to an L-shaped clamping plate 201g, one side of the L-shaped clamping plate 201g is slidably connected to a movable plate 201h, one side of the movable plate 201h is threadedly connected to a threaded handle 201i, one side of the fixed rod 201b located on the non-edge of the fixed frame 201a is fixedly connected to a stabilizing frame 201c, the stabilizing frame 201c is rotatably connected to the longitudinal telescopic rod 201f, one side of the longitudinal telescopic rod 201f is fixedly connected to an L-shaped clamping plate 201g, one side of the L-shaped clamping plate 201g is slidably connected to the movable plate 201h, and one side of the movable plate 201h is threadedly connected to a threaded handle 201i.

[0046] Among them, the long section of the L-shaped clamping plate 201g is provided with a groove, and the movable plate 201h can slide in the groove. The threaded handle 201i is threadedly connected with the movable plate 201h. When the threaded handle 201i is rotated, the groove of the L-shaped clamping plate 201g acts as a limit to the movable plate 201h, so that the movable plate 201h can move along the direction of the groove. Since the longitudinal telescopic rod 201f has the same structure as the transverse telescopic rod 201d, after the transverse telescopic rod 201d is extended to the position of the protective plate 101a, the movable plate 201h can be moved by rotating the threaded handle 201i until the L-shaped clamping plate 201g and the movable plate 201h clamp the edge of the protective plate 101a together, thereby effectively fixing the protective plate 101a.

[0047] Example 2

[0048] Reference Figures 2 to 4 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the adjusting bracket assembly 202 includes a rotating shell 202a rotatably connected to the fixed rod 201b, a rotating groove is opened on the side wall of the rotating shell 202a, a rotating rod 202b is rotatably connected in the rotating groove, a ring 202c is fixedly connected to one side of the rotating rod 202b, and the ring 202c rotates around the fixed rod 201b.

[0049] Among them, a rotating groove is provided on the side wall of the rotating shell 202a in the adjusting bracket assembly 202, and a rotating rod 202b is rotatably connected inside the rotating groove. This rotating rod 202b is L-shaped, and it rotates around the fixed rod 201b. When the rotating rod 202b rotates with the fixed rod 201b as the central axis, the position of the rotating rod 202b can be changed, and then the gap between the rotating rod 202b and other rods can be adjusted. A ring 202c is fixedly connected to one side of the rotating rod 202b, and the ring 202c is sleeved on the fixed rod 201b to ensure that the rotating rod 202b can smoothly rotate around the fixed rod 201b. In this way, the position of the rotating rod 202b can be adjusted as needed, thereby changing the distance between the rods and the rods, and realizing flexible adjustment of the screening device.

[0050] Furthermore, a first magnetic sheet 202d is fixedly connected to one side of the circular ring 202c, and the fixed component 203 includes a plurality of air bags 203a fixedly connected to the rotating shell 202a, an L-shaped expansion sheet 203b is fixedly connected to one side of the plurality of air bags 203a, a second magnetic sheet 203c is fixedly connected to the side of the L-shaped expansion sheet 203b close to the circular ring 202c, and the plurality of air bags 203a are connected to the air cavity through corresponding air holes 203d, and one side of the air cavity is threaded, and the threaded section of the air cavity engages with the threaded pushing handle 203e.

[0051] When in use, a first magnetic sheet 202d is fixedly connected to one side of the circular ring 202c, and the fixing assembly 203 includes a plurality of air bags 203a mounted on the rotating shell 202a, one side of the air bags 203a is fixedly connected to an L-shaped expansion sheet 203b, and a second magnetic sheet 203c is fixedly connected to one side of the L-shaped expansion sheet 203b close to the circular ring 202c. When the first magnetic sheet 202d and the second magnetic sheet 203c are attracted to each other, the position of the rotating rod 202b can be fixed.

[0052] The airbag 203a is fixedly connected to the top of the L-shaped expansion piece 203b. When the airbag 203a is inflated, it will drive the L-shaped expansion piece 203b to expand and contract, thereby making the second magnetic piece 203c close to the first magnetic piece 202d, and the two will attract each other to fix the position of the rotating rod 202b. There are multiple airbags 203a, and there are also multiple corresponding L-shaped expansion pieces 203b. This arrangement ensures that when the rotating rod 202b is rotated to a specific angle, the airbag 203a is filled with air, and the second magnetic piece 203c and the first magnetic piece 202d are attracted to each other, thereby fixing the position of the rotating rod 202b. At the same time, the airbag 203a filled with gas will squeeze the rotating rod 202b, further ensuring that the position of the rotating rod 202b is fixed. Since the airbag 203a is soft, it can provide a buffering effect for the rotating rod 202b, reducing the possibility of the rotating rod 202b being damaged due to fixation.

[0053] The plurality of air bags 203a are connected to the air cavity through their respective air holes 203d. One side of the air cavity is designed to be threaded and is threadedly connected to the threaded advancement handle 203e. When the threaded advancement handle 203e is rotated, the air in the air cavity is pushed into the air bags 203a. Except for the air bags 203a at the position of the rotating rod 202b, the remaining air bags 203a are filled with gas, thereby further stabilizing the rotating rod 202b.

[0054] Example 3

[0055] Reference Figures 1 to 5 , which is the third embodiment of the present invention.

[0056] When in use, a fixed rod 201b is provided every two movable rotating rods 202b, and two rotating rods 202b are fixedly connected to the fixed rod 201b located at the non-edge, and the rotating rod 202b rotating to one side is connected by a connecting rod, and the rotating rod 202b rotating in this direction is fixed by a threaded pushing handle 203e, and each rotating rod 202b rotating in the other direction has a threaded pushing handle 203e to fix the position, and each rotating rod 202b is fixed in the same longitudinal manner as the fixed rod 201b located at the edge, and the fixed rod 201b located at the non-edge is fixed in the same longitudinal manner as the fixed rod 201b located at the edge, so the rotating rod 202b is fixed by the fixing method at both ends, ensuring the stability of the rotating rod 202b.

[0057] Among them, the rotating rod 202b rotating to one side stops rotating after rotating to the moving height, and the rotating rod 202b rotating to the other side is similar. The height of the rotating rod 202b rotating in the moving direction of the belt 102 is higher than the height of the rotating rod 202b rotating in the opposite direction of the belt 102, and the distance from the fixed rod 201b to the rotating rod 202b rotating in the moving direction of the belt 102 is equal to or less than the distance from the rotating rod 202b rotating in the opposite direction of the belt 102 to the rotating rod 202b rotating in the moving direction of the belt 102. The purpose of this arrangement is that when the material falls and hits the fixed rod 201b, it hits the higher rotating rod Rod 202b, or falls on the belt 102 through the fixed rod 201b and the higher rotating rod 202b. The mass of this material is relatively small. After hitting the higher rotating rod 202b, the speed of the material slows down and the movement direction changes. The higher rotating rod 202b applies a force opposite to the belt 102 to the material. At this time, the smaller material falls between the two rotating rods 202b, and the larger material continues to hit the lower rotating rod 202b, slowing down again and changing the position direction. The larger material falls into the storage box 101b along the inclined fixed rod 201b and the rotating rod 202b.

[0058] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0059] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An automatic screening device for coal taking by a bucket wheel excavator, characterized in that: include, The main body component (100) comprises a bucket wheel machine (101), a belt (102) is installed on one side of the bucket wheel machine (101), the belt (102) is driven by a plurality of gears (103), and a motor (104) is fixedly connected to one side of one of the gears (103); A screening component (200) is located on one side of the main body component (100), and the screening component (200) comprises a fixed support assembly (201) located on one side of the bucket wheel machine (101), an adjusting support assembly (202) is rotatably connected to the fixed support assembly (201), and the adjusting support assembly (202) is fixed by a fixing assembly (203) on one side of the fixed support assembly (201).

2. The automatic screening device for coal taking of bucket wheel excavator according to claim 1 is characterized in that: A protective plate (101a) is installed on one side of the bucket wheel machine (101) close to the belt (102), and a storage box (101b) is placed on one side of the belt (102). The storage box (101b), the protective plate (101a) and the bucket wheel machine (101) are in a straight line.

3. The automatic screening device for coal taking of bucket wheel excavator according to claim 2 is characterized in that: The fixed support assembly (201) comprises a fixed frame (201a) located in a groove on one side of the bucket wheel machine (101), a plurality of fixed rods (201b) are installed on one side of the fixed frame (201a), and a stabilizing frame (201c) is fixedly connected to one side of the fixed rod (201b) located at the edge of the fixed frame (201a).

4. The automatic screening device for coal taking of bucket wheel excavator according to claim 3 is characterized in that: The stabilizing frame (201c) is rotatably connected to a transverse telescopic rod (201d) and a longitudinal telescopic rod (201f), and a clamping claw (201e) is hinged on one side of the transverse telescopic rod (201d).

5. The automatic screening device for coal taking of bucket wheel excavator according to claim 4 is characterized in that: One side of the longitudinal telescopic rod (201f) is fixedly connected to an L-shaped clamping plate (201g), one side of the L-shaped clamping plate (201g) is slidably connected to a movable plate (201h), and one side of the movable plate (201h) is threadedly connected to a threaded handle (201i).

6. The automatic screening device for coal taking of bucket wheel excavator according to claim 5 is characterized in that: The stabilizing frame (201c) is fixedly connected to one side of the fixing rod (201b) located at a non-edge portion of the fixing frame (201a), and the stabilizing frame (201c) is rotatably connected to the longitudinal telescopic rod (201f).

7. The automatic screening device for coal taking of bucket wheel excavator according to claim 6 is characterized in that: One side of the longitudinal telescopic rod (201f) is fixedly connected to the L-shaped clamping plate (201g), one side of the L-shaped clamping plate (201g) is slidably connected to the movable plate (201h), and one side of the movable plate (201h) is threadedly connected to the threaded handle (201i).

8. The automatic screening device for coal from a bucket wheel excavator according to any one of claims 3 to 7, characterized in that: The adjustment bracket assembly (202) comprises a rotating shell (202a) rotatably connected to the fixed rod (201b), a rotating groove is provided on the side wall of the rotating shell (202a), a rotating rod (202b) is rotatably connected in the rotating groove, a circular ring (202c) is fixedly connected to one side of the rotating rod (202b), the circular ring (202c) rotates around the fixed rod (201b), and a first magnetic sheet (202d) is fixedly connected to one side of the circular ring (202c).

9. The automatic screening device for coal taking of a bucket wheel excavator according to claim 8 is characterized in that: The fixing assembly (203) comprises a plurality of air bags (203a) fixedly connected to the rotating shell (202a), one side of the plurality of air bags (203a) being fixedly connected to an L-shaped expansion piece (203b), and a second magnetic piece (203c) being fixedly connected to a side of the L-shaped expansion piece (203b) close to the circular ring (202c).

10. The automatic screening device for coal taking of bucket wheel excavator according to claim 9, characterized in that: The plurality of air bags (203a) are connected to the air cavity through corresponding air holes (203d); one side of the air cavity is threaded; the threaded section of the air cavity is engaged with the threaded pushing handle (203e).

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